CN102658304A - Closed-extrusion and molding method of flange - Google Patents

Closed-extrusion and molding method of flange Download PDF

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Publication number
CN102658304A
CN102658304A CN2012101469667A CN201210146966A CN102658304A CN 102658304 A CN102658304 A CN 102658304A CN 2012101469667 A CN2012101469667 A CN 2012101469667A CN 201210146966 A CN201210146966 A CN 201210146966A CN 102658304 A CN102658304 A CN 102658304A
Authority
CN
China
Prior art keywords
bead
blank
extrusion
flange
inaccessible
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012101469667A
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Chinese (zh)
Inventor
郑光文
白凤梅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui University of Technology AHUT
Original Assignee
Anhui University of Technology AHUT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui University of Technology AHUT filed Critical Anhui University of Technology AHUT
Priority to CN2012101469667A priority Critical patent/CN102658304A/en
Publication of CN102658304A publication Critical patent/CN102658304A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a closed-extrusion and molding method of a flange and belongs to the technical field of pressure machining of metal. The molding method comprises the specific steps of: firstly, preparing a flange blank; then carrying out induction heating on the flange blank at a temperature in range of 950-1200 DEG C to obtain a flange upset piece with an upset end part; putting the flange upset piece into a closed-extrusion and molding mould and then carrying out primary molding by utilizing a closed radial extrusion method to obtain an extruding piece of the flange; and carrying out shaft neck reverse extrusion and molding on the extruding piece, and punching inner holes and fins, and finally machining to obtain the flange. The closed-extrusion and molding method disclosed by the invention utilizes a double-floating concave mould structure of a belt lock hook mould closing device, and the flange upsetting piece in a closed type cavity can be extruded in a radial direction by upper and lower convex moulds. The method disclosed by the invention has the characteristics of compact production process, high material utilization rate, good flange quality and low production and manufacturing cost.

Description

A kind of inaccessible extrusion forming method of bead
Technical field
The invention belongs to the stress metal processing technique field, be specifically related to a kind of inaccessible extrusion forming method of bead.
Background technology
Bead is the strength member of car transmissions, and shape facility is a kind of cylindrical member that flange is arranged.The basic production method that bead is shaped is common forging processing at present.Adopt general contour forging technique to be shaped, the part material utilization rate of production is lower, and back road manufacturing procedure is many, and allowance is big, and manufacturing cost is high.In order to promote quality, reduce cost, adopt precision form to substitute traditional roughing forging and pressing.Novel inaccessible extrusion molding can carry out accurate radial compression to this type of part, realizes hollow forming basically.This method can significantly improve stock utilization, reduces allowance, reduces manufacturing cost.And realize that the inaccessible method that is shaped is to realize obturation through a kind of mechanical lock mold mechanism, and can on common apparatus, accomplish hot extrusion, reduce the requirement of equipment tonnage simultaneously.
Summary of the invention
The present invention is directed to the technical problem that existing bead extrusion molding exists, a kind of inaccessible extrusion forming method of bead is provided.
The inaccessible extrusion forming method concrete steps of a kind of bead provided by the present invention are following:
(1) preparation bead blank: the bead blank is processed in the raw material sawing, calculated blank diameter, D according to the outer axle journal diameter of bead b=D p+ C, wherein: D p-axle journal diameter, D b-blank diameter, C=0~9mm, the axial height of blank is confirmed with the condition that bead forging volume equates according to the blank volume;
(2) end jumping-up: the bead blank that step (1) is processed carries out eddy-current heating in the scope of 950~1200 ℃ of temperature, obtains the bead blank behind the jumping-up of end;
(3) inaccessible radial compression is shaped: the bead blank of step (2) preparation is put into inaccessible mold for extruding and forming, adopt inaccessible radial compression method once-forming to obtain the extrusion of bead then;
The axle journal backward extrusion of the extrusion that (4) step (3) is obtained and endoporus, overlap are die-cut, and last machining is prepared into bead.
Employed inaccessible mold for extruding and forming adopts the two floating cavity die structures that hook together die device with lock in the said step (3), by upper and lower punch the bead blank in the inaccessible die cavity is carried out radial compression.
Adopt the accurate extruding of the inventive method bead product, improved the forming property of bead, improved stock utilization, the product size surplus is little, reduces manufacturing procedure, and production cost reduces greatly, has favorable economic benefit; Mold closing power is carried by clamping apparatus simultaneously, has reduced the requirement of equipment tonnage again.The inventive method has the advantages that production technology compactness, stock utilization are high, the bead quality is good and manufacturing cost is low.
Description of drawings
Fig. 1: inaccessible radial compression shaping dies structural representation.
Fig. 2: part jumping-up sketch map.
Fig. 3: the inaccessible extruding of part sketch map.
Fig. 4: axle journal backward extrusion sketch map.
Among the figure: 1: clamping apparatus; 2: upper bolster; 3: go up punch; 4: the float die socket; 5: the upper cavity die core rod; 6: die core rod cover; 7: following unsteady die socket; 8: the die holder guide pillar; 9: following prominent mould; 10: bottom plate; 11: die shoe; 12: flexible member; 13: eccentric bushing.
The specific embodiment
A kind of inaccessible extrusion forming method concrete steps of bead are following:
(1) preparation bead blank: raw material are cut into the bead blank, calculate blank diameter, D according to bead axle journal diameter b=D p+ C, wherein D p, axle journal diameter, blank diameter D B,C=0-6mm, the size of the axial height h of blank equates with bead forging volume that by the blank volume condition is definite.
(2) end jumping-up: to bead blank eddy-current heating, gathering stock is carried out in the end, obtains the bead blank behind the jumping-up, for radial compression provides performing member.
(3) inaccessible radial compression forming process:
Bead jumping-up spare is inserted in floating cavity die 5 die cavities when the mold open state, and upper bolster 2 is descending, the die cavity of a sealing of upper and lower floating cavity die pressing under clamping apparatus 1 effect formation.It is descending that upper bolster continues, and the bead blank that drives in 3 pairs of die cavities of upper and lower punch carries out obturation extruding, end when punch is squeezed to spacing of mould.The upper bolster return, clamping apparatus is opened automatically, and upper and lower floating cavity die separates, and workpiece takes out.
Because the mould bases versatility is good, can satisfy the needs that similar part plurality of specifications is shaped.Different parts only need be changed different core rods, in certain size range, can use a secondary mould bases.Core rod is changed and is easy to maintenance, reduces the mould use cost.
(4) the axle journal backward extrusion of extrusion and die-cut:
The extrusion that step (3) is obtained carries out axle journal backward extrusion and endoporus, overlap is die-cut, and last machining is prepared into bead, makes size reach the bead requirement of products.

Claims (2)

1. the inaccessible extrusion forming method of a bead is characterized in that these manufacturing process concrete steps are following:
(1) preparation bead blank: the bead blank is processed in the raw material sawing, calculated blank diameter, D according to the outer axle journal diameter of bead b=D p+ C, wherein: D p-axle journal diameter, D b-blank diameter, C=0~9mm, the axial height of blank is confirmed with the condition that bead forging volume equates according to the blank volume;
(2) end jumping-up: the bead blank that step (1) is processed carries out eddy-current heating in the scope of 950~1200 ℃ of temperature, obtains the bead blank behind the jumping-up of end;
(3) inaccessible radial compression is shaped: the bead blank of step (2) preparation is put into inaccessible mold for extruding and forming, adopt inaccessible radial compression method once-forming to obtain the extrusion of bead then;
The axle journal backward extrusion of the extrusion that step (3) is obtained and endoporus, overlap are die-cut, and last machining is prepared into bead.
2. extrusion forming method according to claim 1; It is characterized in that: employed inaccessible mold for extruding and forming adopts the two floating cavity die structures that hook together die device with lock in the said step (3), by upper and lower punch the bead blank in the inaccessible die cavity is carried out radial compression.
CN2012101469667A 2012-05-14 2012-05-14 Closed-extrusion and molding method of flange Pending CN102658304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012101469667A CN102658304A (en) 2012-05-14 2012-05-14 Closed-extrusion and molding method of flange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012101469667A CN102658304A (en) 2012-05-14 2012-05-14 Closed-extrusion and molding method of flange

Publications (1)

Publication Number Publication Date
CN102658304A true CN102658304A (en) 2012-09-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012101469667A Pending CN102658304A (en) 2012-05-14 2012-05-14 Closed-extrusion and molding method of flange

Country Status (1)

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CN (1) CN102658304A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104550609A (en) * 2015-02-04 2015-04-29 安徽工业大学 Closed die forging forming mold
CN104841824A (en) * 2014-02-14 2015-08-19 苏州市东盛锻造有限公司 Horizontal demoulding method of multidirectional die forging hydraulic press
CN106623722A (en) * 2016-12-12 2017-05-10 安徽工业大学 Automatic closed forging forming die

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54112766A (en) * 1978-02-24 1979-09-03 Kobe Steel Ltd Direct forging apparatus for flanged long pipe
CN1533851A (en) * 2003-03-26 2004-10-06 ���ֿ���ʽ���� Method and device for mfg. nosing article
WO2006024281A1 (en) * 2004-09-02 2006-03-09 Sms Eumuco Gmbh Method for producing wheel hub blanks on a compressive forming machine
CN101474642A (en) * 2008-10-24 2009-07-08 中北大学 Multiway shaping method of magnesium alloy wheel and mold
CN101518792A (en) * 2008-02-26 2009-09-02 中国船舶重工集团公司第七二五研究所 Method for precisely forming copper-nickel alloy flange pipes
CN101829698A (en) * 2010-03-30 2010-09-15 河南科技大学 Extrusion forming process of thin-wall long pipe-shaped part blank with flange and mould
CN102303060A (en) * 2011-09-23 2012-01-04 安徽工业大学 Precision extrusion forming method for clutch disc hub

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54112766A (en) * 1978-02-24 1979-09-03 Kobe Steel Ltd Direct forging apparatus for flanged long pipe
CN1533851A (en) * 2003-03-26 2004-10-06 ���ֿ���ʽ���� Method and device for mfg. nosing article
WO2006024281A1 (en) * 2004-09-02 2006-03-09 Sms Eumuco Gmbh Method for producing wheel hub blanks on a compressive forming machine
CN101518792A (en) * 2008-02-26 2009-09-02 中国船舶重工集团公司第七二五研究所 Method for precisely forming copper-nickel alloy flange pipes
CN101474642A (en) * 2008-10-24 2009-07-08 中北大学 Multiway shaping method of magnesium alloy wheel and mold
CN101829698A (en) * 2010-03-30 2010-09-15 河南科技大学 Extrusion forming process of thin-wall long pipe-shaped part blank with flange and mould
CN102303060A (en) * 2011-09-23 2012-01-04 安徽工业大学 Precision extrusion forming method for clutch disc hub

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104841824A (en) * 2014-02-14 2015-08-19 苏州市东盛锻造有限公司 Horizontal demoulding method of multidirectional die forging hydraulic press
CN104550609A (en) * 2015-02-04 2015-04-29 安徽工业大学 Closed die forging forming mold
CN106623722A (en) * 2016-12-12 2017-05-10 安徽工业大学 Automatic closed forging forming die
CN106623722B (en) * 2016-12-12 2018-05-15 安徽工业大学 One kind is automatically closed up forging and molding mould

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Application publication date: 20120912

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